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2 Sheets-Sheet l.

Patented Dec. 24, M389.

(No Mael.)

B. HUBER.

CYLINDER PRINTING PRESS.

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(No Model.) 2 Sheets-Sheet 2.

B. HUBER. GYLINDBR PRINTING PRESS.

No. 417,826.` Patented Dec. 24,1889.

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UNITED STATES PATENT OFFICE.

BERTHOLD HUBER, OF TAUNTON, MASSACHUSETS, ASSIGNOR TO THE HUBER PRINTINGPRESS COMPANY, OF SAME PLACE.

CYLINDER PRINTING-PRESS.

SPECIFICATION forming part of Letters Patent No. 417,826, dated December24, 1889.

, Application led January 15, 1889. Serial No. 296,383. (No model.)

To all whom it may concern:

Beit known that I, BERTHOLD HUBER, of Taunton, county of Bristol, Stateof Massachusetts, have invented an Improvement in CylinderPrinting-Presses, of which the following description, in connection withthe accompanying drawings, is a specification, like letters on thedrawings representing like parts.

This invention relates to that class of printing-press known as thetwo-revolution bedandcylinder printing-press, in which the cylinder isdriven in a constant direction and makes two turns or completerevolutions to each complete stroke of the bed, one turn during theforward or printing stroke and another during the backward ornon-printing stroke of the bed.

This invention has for its object to construct prin ti 11g-presses ofthe class referred to, Whereby the bed of the press is reciprocated by acrank, and the cylinder of the press driven constantly in one directionat a proper speed to correspond with the varying speed of the bed,substantially as will be described.

The particular features in which my invention consists will behereinafter described, and pointed out in the claims at the end of thisspecification.

Figure l is a side elevation of a printing` press or machine embodyingmy invention; Fig. 2, a longitudinal section of the machine, taken onthe line x os, Fig. 3; Fig. 3, a crosssection of the machine on line yy, Fig. 2, and Fig. 4 a sectional detail to be referred to.

The frame-work of the machine, consisting, as herein shown, of the sideframes A A', crossstays A2 A3, and girder A4, is of suflicient strengthto sustain the working parts. The frame-work has, as shown, guides forthe reception of the posts or standards a', having bearings for thejournals of the cylinder a. (See Fig. l.) The lower ends of the saidstandards rest upon the eccentric ends a2 of a rockshaft a3. Therock-shaft a3 is operated by mechanism7 (not shown, but common to thisclass of printing-presses,) so as to keep the said cylinder in contactwith the form co4, supported by the bed a5 during the forward stroke ofthe said bed, and so as to raise the said cylinder out of contact withthe said form during the return or backward stroke of the said bed.

The side frames A A support in suitable journals the driving-shaft b,provided with the usual driving-pulley b. (See Fig. 2.)

The driving-shaft h, within the side frame A', has mounted on it, asherein shown, the small pinion h2 and large pinion b3. The pinion b2meshes `with and rotates a gear b4, mounted between the girder A4 andthe side frame A on a shaft b5, `having its journals supported by thesaid girder and side frame A.

The gear b4, constituting the crank-gear of the machine, is providedwith a crank-pin h6, (see Figs. 3 and 4,) having secured to or fittedupon it the block bl, sliding vertically in a slotted cross-head orguide t8, fastened to a rack-bar b4, which is movable, as shown, in ahorizontal guide or slide Z140. The rack-barbq is reciprocated by therotation of the main shaft b, through the pinion b2, crank-gear b4,crank-pin 196, block bl, and cross-head bs. The rack-bar b9 meshes withand drives the pinion c on an oscillating shaft c', having its journalssupported, as shown, in the side frame A', and a box c? on the stay A2.

The shaft c has mounted 011 it a gear c3, in mesh with a rack-bar c4,secured to the under side of the bed a4, (see Fig. 3,) so that as therack-bar b9 is reciprocated, as above described, the bed a5 isreciprocated through the pinions c c3 and rack-bar c4. i

The cylinder a is revolved twice during each reciprocation of the bed inthe following manner: The pinion h3 on thedrivingshaft b meshes With androtates a spur gear c5, mounted loosely on the hub of the crank-gear b4,(see Fig. 3,) the pinion b3 being twice the size of the pinion b2 inmesh with the crankgear b4.' The spur-gear c5 has secured to or formingpart of it, as herein shown, a calnshaped gear o6, which meshes with androtates a pinion clon a shaft o8, having its journals supported in anoscillating hanger o9, out` side of the frame A, and in a block 040,sliding in a slotted hanger c12 on the girder A4. The shaft cS hasmounted on it outside the frame a gear d, which meshes with and drives agear cl on the shaft cl2 of the cylinder. The pinion c7 is preventedfrom meshing too deeply into the cam-shaped gear c6, as herein shown,

v by a roller di on the end of the shaft cs, (see Fig. 8,) the saidroller running on a camshaped flange d5 on the gear c5, and the saidroller is retained in place in any usual or well-known manner.

I have herein shown my invention as applied to a two-revolutionbed-andcylinder press; but I do not desire to limit myself to thatparticular construction, as I am aware theprinciple of my invention canbe applied to a single-revolution bed-and-cylinder press.

I claiml. In a printing-press, the combin ation, with the bed, of a mainshaft provided with a pinion, a gear driven by said pinion and providedwith a crank, a cross-head and rack-bar, and intermediate gearingbetween the said rackbar and bed, whereby the said bed is reciprocated,substantially as described.

2. In a bed-and-cylinderprintng-press, the combination, with the bed anda crank to reciprocate it, of a cylinder, its shaft, and a gear thereon,an oscillating shaft, a gear mounted thereon in mesh with the gear onthe cylindershaft, a cam-shaped gear driven from the main shaft, and aconcentric gear on the oscillating shaft driven by the said cam-shapedgear, substantially as and for the purpose specified.

3. In a bed-and-cylinder printing-press, a main shaft provided with apinion, a cylinder, its shaft, and a gear on said shaft, andintermediate gearing, substantially as described, between the said gearand pinion, combined with a bed provided with a rack-bar, a secondpinion on the main shaft, a crank-gear in mesh with said second pinion,and intermediate gearing, substantially as described, between saidcrank-gear and rack-bar, substantially as and for the purpose specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

BERTHOLD HUBER.

V'Vitnesses: I

' W. K. HODGMAN, E. L. @Rossi/IAN.

